Fabian Homborg 91ecd3b9b5 completions/git: Skip "!" shell-aliases for wrapping
We can't complete these, and now the user can do

```
set -g __fish_git_alias_$alias $command
```

e.g.

```
set -g __fish_git_alias_co checkout
```

if the arguments in the alias end up going to `git alias`.

Fixes #5412.

[ci skip]
2019-01-22 19:18:00 +01:00
..
2019-01-21 17:27:35 -08:00
2019-01-21 18:09:39 -08:00